Abstract:Objective To investigate the application effect of improved body position in da Vinci Xi robot gastric cancer surgery. Methods A total of 114 patients who received gastric cancer surgery with da Vinci Xi robotic system in Jiangsu Province Hospital of Chinese Medicine from November 2019 to November 2020 were randomly divided into control group (n=57, herringbone split leg supine position) and experimental group (n=57, modified position). The changes of circulatory system, the length of position placement and the incidence of intraoperative adverse events were compared between the two groups. Results Compared with the control group, the length of position placement was shorter, the rate of pressure injury related to medical devices, mechanical arm failure and venous infusion obstruction were lower, and the satisfaction of surgeons with surgical position was higher in the experimental group (P<0.05). There was no significant difference in systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) between the two groups before and after position placement and recovery (P＞0.05). Conclusion The modified position of robotic gastric cancer surgery does not affect the patient's circulatory stability and it's conducive to saving operation time, reducing the incidence of intraoperative mechanical arm failure, poor intravenous infusion and the occurrence of medical device related stress injury. It can improve nursing quality and efficiency and increase the satisfaction of patients and surgeons.